Every LEGO masterpiece needs a foundation. This gray platform serves nicely as a base for all your creations. Build a scene on the streets or one that needs a metal surface. This extra large building plate measures 15 by 15 inches, or for the LEGO expert, 48 by 48 studs. Platform pieces are a great base for building and playing with LEGO. Whether you’re building a skyscraper, looking for a foundation, or building a LEGO table for years of fun, the LEGO Base Plate 15 x 15 Inch Platform is an essential for any LEGO collection.